Photographic-printing machine



Oct. 7, 1924. 1,510,715

R. l.. srlNcHr-IELD PHOTOGRAPHIC PRINTING MACHINE Filed April 14 1923 2Sheets-Sheet l 'l |NvENToR 75 ATTORNEY Oct. '7 1924. 1,510,715

R. l.. s-rlNcHFlELD PHOTOGRAPHIC PRINTING- MACHINE Filed April 14, 19232 Sheets-Sheet 2 El 5 f BYv ATTORNEY Patented Oct. 7, 1924.

UNITED STATI-:s PATENT oFFlcr..

RAY L. STINCHFIELD, OF ROCHESTER, NEW YORK, ASSIGNOB TO EASTIAN KODAKCOMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

. PHOTOGRAPHIC-PRINTING MACHINE.

Application led April 14,

. To all whom it may concern.:

Be it known that I, RAY L. SIHNGHFIELD, a citizen of the United Statesof America, residin at Rochester, in the county of Monroe an State ofNew York, have invented certain new and useful Improvements inPhotographic-Printing Machines, of which the following is a full, clear,and exact specification.

This invention relates to photography and more particularly tophotographic printing machines. It has for its object to provide amechanically driven machine in which the platen movements are manuallycontrolled; to provide such a machine operated from a constantlyrotating source of power, from which the platen is moved through adefinite cycle of movements by temporary connections with the powersource; to provide a machine in which the power transmission mechanismis controlled by a manually actuated lever; to provide a means for.automatically releasing the driving connections, after the platen ismoved a definite distance; and other ob'ects will appear from thefollowing speci cation, the novell features being pointed out in theclaims at the end thereof. l

In the drawings, wherein like reference characters denote like partsthroughout:

Fig. 1 is a section through a printing machine, constructed inaccordance with and illustrating one embodiment of my invention;

Fig. 2 is a wiring diagram therefor;

Fig. 3 is a fragmentary section on line 3-3- of Fig. 4, showing driveillustrating another'form of my invention;

Fig. 4 is a section through the second type of clutch;

Fig. 5 is a section through certain parts of a printer constructed inaccordance with the second embodiment of my invention;

Fig. 6 is still another embodiment of my invention, showing parts of aprinter in section;

Fig. 7 is a part section and elevation of certaln parts of the printershown in Fig. 6;]ind nl d ragm I d t 1l i 8 is an e arge entary e a' ofprts of the platen levers, shaft and springs. l

In Fig. 1 the printer is illustrated as consisting of a cabinet 1 havinga slanting top 2, in which ,there is mounted a glass print- Aa secondslotted bearing 22 1923. Serial No. 632,148.

ing panel 3. Beneath this panel there is a reflector 4 carryin aprintlng lamp 5 and a pilot lamp 6. e former lamp is controlled by aswitch 7 normally held open by a spring8 (Fig. 2*) but which iscompressed to light the printing lamp by a portion 9 of the platen 10.Set screw 11 allows for necessary timing adjustment, as the lamp mustnot light before the presser board 12 of the platen.y 10 is in firmcontact with panel 3. Springs 13 surrounding the limiting screws 14press board 12 from the platen plate 10.

As shown in Fig. 2, lamp 6 is connected to wires 15 and 16 which comefrom the power wires 17 and 18. .A switch 19 permits the power to be cutoli' from the main line, thus stopping motor 20 and extinguishing lamp6. Lamp 5, however, is also controlled by the spring switch 7.

Platen plate 10 carries a main bearing 20 for a pin 21 from which theplaten hangs," guiding the platen by means of pin 23. Pins 21 and 23 Yare carried by lever 24 fulcrumed at 25 to a bracket 26, and extendingrearwardly therefrom, beingpivoted at 27 to a link 28 operated by pin 29on ture forms a walking beam which is operated to raise orlower theplaten by the following mechanism.

gear 30. This struc- Gear 30 is mutilated at 31 and 32 where the teethare cut of. This gear carries two pins, 33 and 34, which are adapted tomove through the path shown in dashed lines in which course they willstrike one of the lugs 35 or 36 on lever 37 pivoted at38 to the casingand at 39 to a push button rod 40. In the position shown 1n Fig. 1 pushbutton 41 is depressed holding lever 37 against the pull of spring 42.The tension on this spring may be adjusted by the nut 43. The opening 44between lugs 35 or 36 is just sufficient 1n width to permit pins 33 and34 to pass through when the lever is in an intermediate position betweenthe stop pins 45 and 46. Thus lug 35 or 36 will always lie in the pathof the pins when the lever is at rest in either extent of its movement.A latch 47 pressed by spring 48 engages one of the pins and holds gear30 against a reverse movement.

Grear 49 driven by pinion 50 of the motor shaft 51 is continuouslyrotated. To lower platen, push button 41 is depressed releasing pin 33to pass through opening 44,

being moved through the impulse of springs 13 pressing upwardly on thewalking beam and exerting a force downwardly on link 28. This throws agear segment 52 in mesh with gear 49 and the parts move until pin 33 islatched by member 47, at which time the mutilated section 31 lies abovegear 49. At the same time pin 34 is held by lug 36 against furthermovement. By releasing pressure on button 41, this operation isrepeated, except that the parts will stop with the-platen raised, and,instead of having the compression springs 13 start the mutilated gearinto mesh with gear 49, the weight of the hanging platen forms thestarting imnlse. l P 1t is, therefore, inthis form only necessary topress the button down to lower the platen, and torelea'se the button toraise it. The duration of the exposure is controlled manually by theoperator and the work of moving theU parts is accomplished by a motorthrough mechanical transmission, by which l mean a system of machineelements such as levers, links, cams, gears, clutches, etc., incontradistinction to systems in which the power is transmittedelectrically along wires, or by fluid pressure through pipes. en theterni manual is used in this specifi-l cation, and inthe claims ll meana force applied by any part of the operators body, or under voluntarycontrol, by the operator.

A second embodiment of my invention using a cam in'place of a crank isshown in Figs. 3 to 5. The difference from `the .first machine liessolely in the mechanism which operates the platen lever 24 which in thislatter case is moved by a link 60 pivoted at 61 to a rod 62 slidable inbearing 63 being moved by roller 64 which runs in the cam slot 65 of camwheel 66.

Referring to the clutch member illustrated in Figs. 3 and 4: wheel 66carries a hub 67 and a hexagonal head 68, and rotates freely upon shaft69, being positioned by a collar 70. Pinion 71 driven by motor 72 turnsgear 73 which is affixed to shaft 69 and carries a raceway flange 74.Balls 75 may lie against this flange, being spaced by a notcned flange76 carried by disk 77. Disk 77 turns upon flange 76 which slides insideof flange 74, and is held in position by hub 67. There are two teeth 78on the periphery alternately engaged by the double hook stop 79 havingan arm 79 held by spring 80 in the position shown in dashed lines inFig. 5 and being movable therefrom by the knob 81 into the positionshown in full lines, same figure. A pin 82 carried by wheel 66 enters anopening 83 in disk 77 and lies against a spring 84 which tends to turnthe notched flange 76 until the balls 75 impinge upon the hexagonal head68 and flange 74 thus forming'ladriving connection which is broken bystopping disk 77. Thus one hook of stop andere 79 may engage a tooth 78holding the balls in an inoperative position in which the cam is notdriven. Each time a tooth is released the platen will be raised orlowered, so that knob may be pressed down to lower the platen andreleased to raise it, the mechanical power being automatically releasedat the end of a cycle of movement, when a tooth 78 is caught by one ofthe hooks 79.

In Figs. 6 to 8 l have shown another embodiment of my invention whereinthe platen is raised by spring pressure and is lowered by a cam againstthe action of this pressure. As the printing cabinet 1 is substantiallythe same as that shown in Fig. 1, and as parts of the mechanism are thesame as parte of the other figures, the same reference characters willbe used for similar elements.

The platen 10, carried by arms 24 pivoted to brackets 26 by shaft 25,differs from the form shown in the revious figures in-that coiledsprings 100 ig. 8) constantly tend to raise the platen from panel 3. Oneof the arms 25 is pivoted at 27 to a link 60, which in turn is pivotedat 61 to an arm 62 terminating in a roller 64 and slidable through abearing 63. In the present instance roller 64 contacts with the camperiphery 101. of disk 66. This cam has two sharp `declines 102 and 103(toward the cam shaft 104) connected by a concentric portion 105 and anoutwardly flaring curved portion 106. The cam disk 66 is keyed to shaft104, upon which mutilated, gear 30 is keyed; gear 30 being of the sameconstruction as that shown in Fig. 1, as also is gear 49, pinion 50,shaft 51 and motor 20.

The action of cam 101 is as follows: Roller 64, Fig. 6, is on a sharpdecline 102 when the platen is in inoperative position. Control lever 37differs from that shown in Fig. 1 in that lugs 107 and 108, which arearranged offset from each other by the width of a pin 33 or 34. As pin33 is held by lug 107, the parts remain stationary while the gear 49rotates. By depressing button 41 gear 30 is permitted to move until pin33 strikes lug 108, as in Fig. 7, the moving impulse being caused bysprings 100 pressing downwardly upon roller 64 upon the incline 102.Releasing button 41 causes lever 37 to return to its first positionreleasing pin 33, and a further pressure by springs 100 upon roller 64throws gear segment 52 into mesh with gear 49, thus turning shaft 104and cam disk 66, causing roller 64 to ride up incline 106, thus loweringplaten 10 to dashed line position in Fig. 6, when gear 30 will bestopped by pin 34 striking lug 107. A second actuation of knob 41repeats this movement, except-ing that as roller 64 comes to the decline103 the necessary starting impulse is obtained for wheel 30 and springs100 may return platen 10 to its full line position in Fig. 6, in whichposition roller 64 rides around the concentric surface 105, and startsover the edge of the incline 102.

With this last form the ofperator depresses button 41 once to lower p eplaten, after which it remains in contact with panel 3 until a seconddepression causes the platen to raise. This operation is useful for workrequirin prolonged exposures.

I pre er to add a dashpot havinga plun r 111 raised norma ly by spring112 whic is struck by an extension 113 of one arm 24, thus cushioningthe end of the stroke of the arm under the im ulse of springs 100.Having thus describedp my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A photographic printing machine, comprising a printing panel, a latenmovable into printing position on sai panel and removable to clearanceposition, a continually rotating power element, a transmission systemadapted to be connected to said element and receive a definitemovementeach time it is thus connected, said system being connected tosaid platen to move the latter to printing position during one of saiddefinite movements and to permit its removal to clearance positionduring a subsequent definite movement, a control member the actuationsof which are manually governed, and a device which efects connectionbetween said system and power element when said control member isactuated.

2. A photographic printing machine, comprising a printing panel, a latenmovable into rinting position on sai panel and remova le to clearanceposition, a continually rotating power element, a transmission s stemada ted to be connected to and dyisconnect from said power element, saidsystem bein connected to said platen to move said p aten to printingposition, and permit its removal to clearance position, a controlmember, the actuations of which are I manually governed, and a devicewhich governs the connecting of said transmission system to said powerelement to move said platen to printing position upon manual actuationof said control member, and to permit removal of said platen toclearance position upon further actuation of said member, said platenremaining in printing position between said actuations.

3. A photographic printing machine comprising a printing panel, a platenmovable into printmg positlon on said panel and removable to clearanceposition, means, including a continually rotating power element and amechanical power transmission between said element and platen, formoving said platen to printing position, holding it in such position, anremoving it to clearance position, a control member, the actuations ofwhich are manually governed,

`prising a chanical transmission including a clutch S0 member, a controlmember, means for governing the control member manually, said meansbeing normally positioned to hold the clutch member in a position inwhich the motor drive is disconnected from the platen, but being capableof manual actuation whereby the platen will be moved by the motorthrough the clutch.

5. A photographic printing machine comprising a printing panel, a platenmovable into printing position on said panel and removableto clearanceposition, a motor drive, av mechanical transmission between the motordrive and the movable platen, the mechanical transmission including aclutch member, a control member, means for governing the control membermanually, said means being capable of movement between two positions ineither of which the motor drive will be disconnected from the platen 100through the clutch, the clutch being actuated to connect the platen tothe drive when the manual control member is in a position between thetwo above mentioned positions.

6. A photographic printing machine comprising a printing panel, a platenmovable into printing position on said panel and removable to clearanceposition, a motor drive, a mechanical transmlssion between the mo- 110tor drive and the movable platen, the mechanical transmission includinga clutch member, a control member, means :for governing the controlmember manually, means for normally causing the control member todisconnect the motor drive from the platen through the clutch, andmeans, actuated by the control member fior causing the clutch member toconnect the motor and platen for moving the latter a definite distance.

7. A photographic printing machine comprising a printing panel, a platenmovable into printing position on said panel and removable to clearanceposition, a motor drive, a mechanical transmission between the motordrive and the movable platen including a rotatable member, connectionsbetween the rotatable member and the platen, a clutch between a motordrive and the rotatable member, a clutch control member movable to andfrom operative positions in which the clutch connects the motor and therotatable member, means including the control member for retaining theclutch in an inoperative position, and. a manually controlled means formoving the control member to an operative position between theinoperative positions.

8. A photographic printing machine comprising a printing panel, a platenmovable into a printing position on said panel, and lremova movementbeing a definite distance comprising a cycle of movement, a motor drive,a mechanical transmission between the motor drive and the movable platenincluding a rotatable member, means for normally holding the rotatablemember against movement, means for driving the rotatable member by themotor for a definite distance, means forle to a clearance position,either Lamme automatically stopping the movement of the rotatable memberafter the cycle oli movement is complete, and manually controlled meansfor releasing the stopping means 9. ln a photographic power-drivenprinting machine, a printing panel, a platen movable into printingposition on said panel, a continually rotating power element, atransmission system connected to said platen to force the latter toprinting position, a con trol member the actuations of which aremanually governed, means for connecting said system and power elementupon actuation of said control member, and means for automaticallydisconnecting said system and power element when the platen reaches itsprinting position.

Signed at Rochester, New York this 12th day of April, 1923.

RAY L. STINCHFIELD.

